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Important – GPS Week Number Rollover for equipment

Be aware that the GPS week number rollover for equipment is to occur on some of the GPS units (and AIS / Inmarsat C) on 4th August 2019.

The subject models are designed to turn the clock back 19.6 years (19th December 1999), and will continue to work incorrectly under normal use, however, there is no influence on its positioning operation.

As a result, the following abnormalities will occur in some equipment:

  • Date information will be displayed erroneous;
  • The erroneous date will be output to external equipment (!Voyage Data Recorder!)
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